The treatment of medulloblastoma spinal cord lumbosacral metastasis is mainly surgical resection and postoperative radiotherapy. 1. Surgical resection: the tumor should be removed as cleanly as possible to reduce and avoid residuals, and the obstructed fourth ventricle should be restored to be open, and microscope can be used to separate the tumor and normal brain tissues carefully during the operation. 2. Postoperative radiotherapy: generally, whole spinal cord radiotherapy or whole brain radiotherapy in the posterior cranial fossa is used. The specific dose of radiation therapy should be analyzed according to the severity of the disease and will vary to some extent. 3. Chemotherapy: standard-risk patients over 3 years old usually use cisplatin, vincristine or cyclophosphamide, cisplatin and vincristine alternately; high-risk patients over 3 years old should use multiple drugs, high and large doses of combination chemotherapy program. Patients are advised to have a reasonable diet, ensure nutritional intake, avoid spicy and stimulating foods, and avoid smoking and alcohol. It is also recommended that patients consult a regular hospital and choose an appropriate treatment plan based on their specific situation and the advice of the attending physician.